03-13-2011 04:56 AM - edited 03-16-2019 03:56 AM
HI Team,
Appreciate if you could guide me with the procedure how to delete CTL files from Cisco IP Phone models 7975/7945/7965 series.
regards
Ratheesh
03-14-2011 03:17 AM
Sorry, but I have no idea anymore
03-14-2011 03:44 AM
No probs Marcel.. thanks a lot . Will update once I have a solution
regards
Ratheesh
03-14-2011 04:07 AM
Hello again,
one last question, what version of CUCM do you use?
If it is version 8.x you must delete the ITL File. Go to Security Configuration > Trust List > ITL File - "More" and "erase"
Kind regards,
Marcel
03-14-2011 04:20 AM
CUCM ver 6.1.5
03-14-2011 05:05 AM
The CTL file will prevent changing the TFTP server address to something that is not in the CTL file, and also is used to authenticate the TFTP's signed configuration file if you have the phone security profile configured with the signed TFTP file option checked.
The auth fail message you're seeing is due to the firmware that is currently on the phone, if you check the current firmware version I be you're on 8.3.x. The reason you're seeing auth fail is because each firmware load is signed and the keys used to sign the firmware loads changed around 8.5.2SR1 so that older firmware versions cannot authenticate the signature on the firmware file and then you get the auth fail. The fix is to do a stepped upgrade of your phone to something like 8.4.4 first which contains both keys for the new firmware and the older one, then after upgrading to 8.4.4 you can go to the actual 8.5.3 or whatever version is default on CUCM 6.1.5.
12-10-2017 08:04 AM
09-13-2022 04:33 AM
Do you have any solution in deleting the CTL file when we migrate the phones to a different cluster
09-13-2022 05:40 AM - edited 09-14-2022 06:19 AM
Hey, I actually mistakenly delete CTL file from Cisco IP phone and want to recover get it back.
What is the procedure to recover those deleted file?
Need your supports.
Regard: Springwell vs Pelican
02-13-2023 03:08 AM - edited 02-13-2023 03:11 AM
Hello
you can do it with python for 7XXX , I just do some changes and validate the scripts . They are not my own .
for 8800
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